| Eriocrania, Eriocrania sparrmannella, Eriocrania unimaculella, Eriocraniidae, Dyseriocrania subpurpurella|Eriocrania semipurpurella semipurpurella (North America (from eastern Ontario east to Nova Scotia and south to southern New York), from Great Britain through northern and central Europe to Japan)
Eriocrania semipurpurella pacifica Clarke, 1978 (southern Alaska and north-western Washington)
Eriocrania semipurpurella Wikipedia
Eriocrania semipurpurella is a moth of the family Eriocraniidae. It is found from Europe to Japan and in North America. The species closely resembles Eriocrania sangii.
The wingspan is 10–16 mm. The moth flies from March to April depending on the location.
The larvae feed on birch.